We are GuestWorld, a company specialized in outsourcing and human resources development. We operate under a culture of excellence and promote a positive environment, aligning our clients' objectives with the motivation of our people. We focus on effective solutions, continuous training, and partnerships based on trust and value creation. **Responsibilities:** * Design and implement scalable and resilient distributed systems; * Develop microservices, applying clean code principles and design patterns; * Create and maintain unit, functional, and non-functional tests; * Ensure the implementation of modern security practices in the construction of APIs and services; * Collaborate with multidisciplinary teams in agile environments; * Participate in code, architecture, and technical decision reviews. **Requirements:** * Bachelor's or Master's degree in Computer Engineering or related fields (or equivalent experience); * Minimum of 5 years of experience in software development; * Strong knowledge of object-oriented programming languages such as .NET and Java; * Experience with microservices and distributed systems; * Experience with EDA frameworks and event brokers such as Kafka, RabbitMQ, or Azure Event Hubs; * Familiarity with testing tools (xUnit, JMeter, or Robot Framework); * Familiarity with observability tools (logging, tracing, monitoring) and OpenTelemetry; * Knowledge of security standards such as JWT, OAuth2, OIDC; * Experience with event-driven communication patterns (CQRS, Event Sourcing) and integration patterns (Strangler, ACL) will be an advantage; * Knowledge of communication protocols (gRPS, SOAP, JSON/RPC) will be valued. **Benefits:** * Competitive salary and benefits package; * Continuous training and specific certifications; * Opportunities for professional growth and development; * Dynamic and collaborative work environment; * Growing company with a promising future. * *See how we handle your data at* *www.guestworld.pt*